The statistic shows the number of deaths due to terrorism worldwide between 2006 and 2018 . 32,836 people were killed by terrorists in 2018 . The number of terrorist attacks worldwide declined between 2006 and 2017 . In 2006 , about 14,371 terrorist attacks were counted , while in 2018 , 8,093 terrorist attacks were counted . Terrorism is often defined as unlawful violence or systematic use of terror against civilians or politicians for ideological or political reasons , with the intention to create fear . Terrorism is practiced by nationalistic groups , religious groups , revolutionaries and ruling governments . The fear of terrorism is still instilled in many people 's minds . According to Gallup 's survey , which was conducted among adults in the United States in 2013 , 34 percent of the participants stated that they were very worried about the possibility of future terrorist attacks . Only 10 percent of the participants said that they were not at all worried .
